WOW I feel like an idiot. Didn't know that there had to be connections. Thanks!

Hello all, I've just started playing with no prior knowledge of how the game works (besides playing the tutorial of course!). I placed the steam engine down, with 4 broilers hooked up to it, with water flowing, etc. The temp on each broiler, as well as the SE is at 100, there's water in everything, ...